By Tiernan Ray

Here are some things going on this morning in your world of tech:

Shares of enterprise data mining and analysis tools vendor Teradata (TDC) are down $8.71, or almost 17%, at $43.87, after the company yesterday afternoon warnedQ3 results will miss analysts’ expectations, and cut its full-year outlook, saying sales were weak outside the U.S. and Europe.

The stock has received four downgrades, that I can see, from Goldman Sachs, Credit Suisse, Sterne Agee, and Morgan Stanley, and a number of price target cuts. Not everyone is willing to give up, however. CLSA‘s Ed Maguire reiterates a Buy rating on the shares, while cutting his price target to $63 from $77, writing that “It’s not yet clear what drove deal slippage in APAC and MEA, but we’re confident it’s not Hadoop-related competitive threats,” referring to the open-source data storage and analysis program.

“We think the shares offer a decent risk/reward at after-market levels. Assuming Americas and Europe continue to execute, and the reasons for the APJ and MEA deal slippage are addressable, our fundamental thesis would remain directionally valid (if the timing only gets pushed out by emerging markets).”

Shares of cloud computing security firm FireEye (FEYE) are down 87 cents, or 2%, at $40.68, after underwriters initiated coverage of the shares, which went public September 20th. The stock gets three Buy ratings, from Nomura Equity Research, Merrill Lynch, and J.P. Morgan, and three Neutral ratings, from UBS, Goldman Sachs, and Morgan Stanley.

J.P. Morgan’s Sterling Auty, starting the stock at Overweight, with a $50 price target, writes that FireEye is “the primary disrupter to the $10B currently being spent on signature-based security solutions including messaging security, network antivirus, intrusion detection/prevention and secure web gateways,” much the way Palo Alto Networks (PANW) disrupted the firewall market.

Shares of Microsoft (MSFT) are up 38 cents, or 1%, at $34.84, after Jefferies & Co.’s Ross MacMillan raised his rating on the stock to Buy from Hold, and raised his price target to $42 from $33, writing that he has “increased conviction around the transition to the cloud” for the company.

“Our deep-dive into O365 suggests a powerful opportunity in SMB/ consumer to drive higher value per customer which raises our conviction in the value of Office,” writes MacMillan. “While early days for Azure, we think it is fast becoming the #2 in infrastructure/ platform as a service.”

Shares of Qualcomm (QCOM) are up 92 cents, or 1.4%, at $68.69, after Stifel Nicolas’s Sanjiv Wadhwani this morning initiated coverage of the stock with a Buy rating, and an $80 price target, writing that ” Qualcomm’s high-margin, cash-generating licensing business looks to continue to grow in the coming years with 4G LTE rollouts, including at the world’s largest carrier – China Mobile, which should provide a nice tailwind to the licensing business in 2014.”

Also this morning, Leon Cooperman of Omega Investment Advisors was on CNBC talking about why he likes the stock and how it’s undervalued.

Speaking of chips, Raymond James‘s Hans Mosesmann initiates coverage of Marvell Technology Group (MRVL) with an Outperform rating, and a $13.50 price target, writing that “the company’s near-term growth prospects in Mobile & Wireless will lift estimates over the next several quarters. We also view potential estimate risk from secular hard-disk drive (HDD) unit declines and an increasing mix of lower margin Mobile revenue as overblown.”

The Street continues to model iPhone and iPad demand trends for Apple (AAPL) as the company heads for its fiscal Q4 report on October 28th. Piper Jaffray’s Gene Munster writes that his surveys of people buying an iPhone 5S revealed that 46% of them intended to buy an iPad in the next twelve months, which is higher than the 34% who said last year at the time of purchasing the iPhone 5 that they intended to buy an iPad.

Apple shares today are up $3.75, or 0.8%, at $499.79,

Speaking of Apple, Feltl & Co.’s Jeffrey Schreiner this morning pounds the table in support of chip supplier Cirrus Logic (CRUS), which makes audio processing parts for the iPhone and iPad. Schreiner projects a beat for fiscal Q2, which the company will report October 29th.

Schreiner, who has a Buy on the shares, and a $27 target, sees $187.5 million in revenue and 66 cents EPS, which is better than the consensus for $182 million 60 cents, “driven by strength in leading customer AAPL and the contribution of new non-AAPL revenue opportunities within Motorola Mobility/Xiaomi.”

About Tech Trader Daily

Tech Trader Daily is a blog on technology investing written by Barron’s veteran Tiernan Ray. The blog provides news, analysis and original reporting on events important to investors in software, hardware, the Internet, telecommunications and related fields. Comments and tips can be sent to: techtraderdaily@barrons.com.